Originally Posted by jyasaki
Man of Rubber (Yeah; I know...) sells Leafied A-6 Pressure relief valves; as stated above, there isn't and inflate+pressure relief all-in-one valve.
There might have been. I came up with an idea for one a few years ago when I had my tube problems and wanted PRV's I could fit on without cutting the tubes. I sent an email to Leafield with details of the concept but they never even bothered to reply
The valves are usually fitted in pairs with the inflation valve and the PRV side by side for each chamber. You can see the valves for the centre and rear chambers of the starboard tube on my Vipermax in the attached photo, the bow chamber has one fitted either side for symmetry.